Domestic sewage treatment equipment production began in the late 1970 s, when the low level of product standardization, integration and series, finalize the design product is less.

In the 1990 s, the relevant state departments successively for the major sewage treatment equipment manufacturing enterprises for technological transformation, improve the level of the manufacturing capability and manufacturing, urban sewage treatment equipment and the general equipment of form a complete set of production levels have greatly improved.


for comprehensive control of pollutant discharge goal, no matter from the order and the 'water ten' or the phrase, are more sword refers to the industry, and industrial wastewater treatment unit of capacity needs sewage treatment equipment is inherently than many municipal sewage treatment is difficult.

So, predictable wastewater treatment equipment in the future growth engine when headed by industrial wastewater treatment.


industrial wastewater treatment difficulty is big, takes the specialized equipment or reagents, general small environmental protection enterprises also take industrial wastewater have no choice.

Our company research and development of industrial wastewater treatment equipment can handle some simple small industrial wastewater.
Resource conservation and wastewater discharge standard.

This project adopts the biochemical method and treatment of industrial wastewater.

sewage treatment equipment (
The MBR membrane bioreactor)

Is the problem of water resources and water environment problems, water supply and drainage technology, membrane technology and biological technology perfect and unified.

The MBR and traditional wastewater treatment methods have very big distinction: after aerobic aeration and biological treatment of water, by the pump through filter membrane filtration after extraction.

It replaces the traditional biochemical process in the second pond, and tertiary treatment process.

As a result of the existence of the MBR membrane system can be greatly improved the ability of solid-liquid separation, to make the system of the water, water quality and volume load have been greatly improved, after membrane treatment of high water quality standard (
More than national A level standard)

, disinfected, and finally the high quality of reclaimed water for water quality and biological high safety, can be directly as a new water source.

Due to the effect of filtering of the membrane, microorganism was completely trapped in membrane bioreactor, hydraulic retention time and sludge age thoroughly separation, active sludge to eliminate the problem of sludge bulking in traditional activated sludge process.

Membrane bioreactor is characterized by a high on pollutants removal efficiency, nitrification ability is strong, can be simultaneous nitrification, denitrification, and denitrification effect is good, stable discharging water, excess sludge production is low, the equipment together tightly, covers an area of less, easy incremental capacity, high degree of automation, simple operation, etc.


in terms of overall technical level of water treatment equipment in our country, compared with the international advanced level of developed countries, whether it be in the technical standards of water treatment equipment, equipment operation safety and reliability, durability, efficiency, energy consumption also there exists a large gap, especially in high technical content of the special water treatment equipment and new universal equipment of water treatment technology in our country at present is not reached the international advanced level, the technology is still in the primary exploring stage.

Therefore, in order to shorten the water treatment equipment technology in our country as soon as possible the gap with the international advanced level, we should strengthen the next new universal equipment and special equipment in theory research and technology development, strive to make in the next few years China's high-end water treatment equipment industrialization level has reached a certain height, thus leading the industrialization of our country's water treatment equipment level has the low-end to high-end, make our country into the world advanced water treatment equipment level.

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Printing and dyeing wastewater treatment technology more coupling
printing and dyeing wastewater treatment with water, complex, high organic matter content, water quality and biological sex difference, alkalinity, high chromaticity, etc.

Environmental science research institute of jiangsu province hai-suo wu according to the characteristics of the dyeing and printing wastewater and the treatment process is put forward, the research focus in the printing and dyeing wastewater treatment technology at present can be divided into the following four parts: the pretreatment stage by pH control, homogeneous average to reduce the impact load, biological toxicity;

By anaerobic biological stage of processing facilities improve, aerobic microorganism raise to biological sex;

Deep processing stages through adsorption separation, filtering, oxidation technology meet standards;

Regeneration recycling processing phase coupling regeneration technology by membrane separation, purification and recycling.

And points out the development trend of printing and dyeing wastewater treatment technology is efficient biological coupling, adsorption, separation technology, production process and waste water treatment of the coupling, high quality development and printing and dyeing wastewater reuse technology of desalting and regeneration.


the polluting industries of moderate sewage treatment and reuse is an important means of reducing investment and operation cost, so the choice of economic efficient pretreatment process optimization is the focus of the research in recent years, in the process of a new round of sewage treatment plant to standard transformation, deep processing standards process will be more widely used.


new industry printing and dyeing wastewater treatment methods
1.

Essence of diatom earth new technology of dyeing and printing wastewater
diatomaceous soil treatment has a set of flocculation, adsorption and filtration function, CODCr of sewage, have strong ability to remove chromaticity.

Diatom unbalanced potential able to neutralize the suspended particles on the surface of the charge, make its repel potential damage and form mash with diatom feather, forming a larger flocculant.

, on the other hand, because of their huge specific surface area and surface adsorption and stable colloid can be adsorbed onto the diatomite, and attached to the each other between diatomite particles of pollutants in the adsorption capacity is big, can rapidly to form larger flocs, granularity and density flocculant physical form a stable dense suspended sludge filtration layer, suspended mud filter after make a further purification, wastewater after biochemical purification finally to achieve.

2。

'ozone oxidation BAF + air flotation + membrane separation' technology

according to the traditional ozone activated carbon process and dissolved air flotation process, contact inside the equipment will be fully mixed, raw water and ozone combined ozone activated water up through the unique packing layer, after contact oxidation, kill the activated sludge of team, and oxidation of ferrous iron ions, manganous ions to form hydroxide colloid, adsorption with each other, through two levels of whirl mix mixed condenser, using ultrafiltration membrane technology, water molecules and molecular weight smaller solute through the membrane, and the particles is greater than the film hole, large molecules, such as being trapped by screening, so as to achieve the purpose of the industry of printing and dyeing wastewater disposal.




in the production of 222 joint degreased cotton winding water filter effectively remove impurities of large amount of high filtration efficiency, etc

For water reuse wastewater discharge standards improve space
in recent period of time, the attention of water price reform is more and more high.

In October 2011, the National Development and Reform Commission, the price department of the environment and the real estate price administration department chief NiHong, said the next step of the water price reform will be comprehensively implement sewage treatment charging system, enlarge the scope of sewage treatment fee, timely adjust sewage disposal standards.

Current prices are mainly consists of water resources, water supply and sewage disposal price of three parts, he puts forward, through the adjustment of the price of water and implementation step of water and norm system of progressive surcharges water efficiency, and provide space for water reuse.

as & other;
New gb & throughout;

Issued and implemented, the government on the improvement of water quality standard of water supply, and a lot of water supply companies say that greatly increased the enterprise the management cost, bask in the loss of a single, said water price and water supply enterprise cost highly match, is not conducive to the virtuous circle of the water supply enterprise is not conducive to the implementation of water saving.
At the same time, the opposition is also very loud.

, and water price should be an excuse for water supply enterprise liabilities, water price should rise?
Water world -
China's urban water network of & other;

DiBiao water quality, water supply business proposal rose water, reasonable?
”

Survey, 427 people participate in discussion, of which 165 people support and 250 people against, otherwise a few people who hold a neutral attitude.


the water supply enterprise thought, as the government and around on the improvement of security requirements of water supply, water price has not increased with the increase of the cost increase, greatly contributed to the loss of the enterprise, suggest that relevant departments to speed up the reform of water price.

Otherwise, supporters say, moderately raising water price is reasonable.

Current urban waste water resources phenomenon is serious, low water price has become the important factors.

Through the adjustment of the price of water, strengthen water saving consciousness of the masses, is bound to reduce consumption, to a certain extent, alleviate the water crisis, forming a virtuous cycle, ultimately achieve rationalization of water price.

On the contrary, more and more serious waste of water resources due to water price is too low, people can only through the water reuse, water treatment technologies such as desalination or the south-north water diversion project to alleviate the water crisis, so the cost of capital cost will be greater.


opponents think citizens have the right to get up to the standard of drinking water, the water supply enterprise if only because the result of a standard improve, transfer to the price of the common people, obviously is not reasonable.

Opponents also suggested that the water supply enterprise by constantly improve the level of technology, optimization of management mode, improving process to reduce the cost, achieve the objectives of the enterprise sustainable development.

And, water unit is a monopoly, in the case of unknown cause losses to make up for the loss of price way, hard to make convincing.

With the development of the market, large foreign enterprises on China's water market this & other;
Big cake & throughout;

, entering China water sector, foreign companies at the same time to have mastered the most say.


according to NiHong, water price adjustment, the next step will be in accordance with the polluter pays principle, to promote sewage treatment fee levying scope.

Based on the increase and disposal of sewage discharge standards, timely adjust sewage charge standard, intensify tax, especially to improve the collection of self-provided water sources, we will continue to improve the sewage disposal of the collection, use and supervision mechanism, ensure the normal operation of facilities for central treatment of sewage.


water price adjustment is the trend of The Times, the government should not only establish and improve the relevant laws and regulations on increasing, and at the same time we need to play a supervision and execution function, cogent accomplish & other;
By, the people throughout the &;

To fundamentally improve and solve the problem of China's water crisis.

Use of peanut shells in the treatment of electroplating wastewater
peanut shell contains a lot of carbohydrate and crude fiber, and tannin compounds [
12]
。

It is a kind of polyphenol compounds, and many metal ions formed by the strong coordination stable five membered ring structure, so it is extremely effective ion exchange material, easy substitution reaction with heavy metal ions in order to achieve the purpose of the precipitation of heavy metal ions.

GuYaXin [
13]

Clean the peanut shells, drying, crushing, peanut shell powder, peanut shell powder as the main raw material is studied, and the of Cd2 +, Pb2 + waste water adsorption experiment was carried out.

Experimental results show that the pH value, Cd2 + and Pb2 + in waste water quality concentration, adsorption time factors can influence the peanut shell powder of Cd2 +, Pb2 + adsorption effect;

In Cd2 +, Pb2 + mass concentration are 30 mg/L, pH value of 6, 2 h, the quality of peanut shell powder is 0.

Under the condition of 25 g, Cd2 +, Pb2 + removal rate reached 92 respectively.
2% and 90.
0%.

Gary tong, etc. [
14]

Will deal with good peanut shell powder 50 g put in 250 mL of the round bottom flask, add a certain amount of acid formaldehyde solution (

The volume of formaldehyde with sulfuric acid ratio is 1:5, the concentration of sulfuric acid is 0.

1 mol/L, the volume fraction of formaldehyde is 37%)

, under 80 ℃ water bath pot heating reflux after 3 h, peanut shell powder to the suction filter to remove the solvent and residual slag powder with distilled water to wash to the pH value & gt;

5, the final drying 3 h under 50 ℃, the modification of peanut shell.

The heavy metal in wastewater treatment using modified peanut shell, reaction time, amount of treatment agent to join, pH and reaction temperature on the influence of acidic waste water of heavy metal ions adsorption performance.

The results show that the acid formaldehyde solution to appropriate modification of peanut shells, and the modified products used to remove heavy metal ions in the water is feasible.

Heavy metal wastewater treatment, the better technology conditions as follows: control the pH value of 7, add 2 in every 100 ml water.

5 g modified peanut shell, stir under 40 ℃ to 60 min.

In this condition, the removal rate can reach more than 90%.

li [
15]

With peanut shell as raw material, HNO3 as modifier, to modified adsorbent preparation of peanut shells, and studied the adsorption of Pb2 + in water performance.
The results showed that in 2.

0 g peanut shells add 25 mL volume fraction of 10% HNO3 solution, the temperature control at 80 ℃, stirring 3 h, the modification of peanut shell.

Using modified peanut shell adsorption Pb2 + the best conditions for: modified peanut shell 0.
2 g, contains mass concentration for 97.

5 mg/L of Pb2 + 25 mL of solution, pH 5.
0, stir 60 min.
In this condition, the removal rate can reach 97%;
After the adsorption of peanut shells with 0.

5 mol/L HCl solution regeneration, repeat use 2 times, to Pb2 + removal rate over 92%;

Compared with the unmodified peanut shells on the removal rate of Pb2 + (
87%)
Which has obvious improvement.

By HNO3 to modified adsorbent preparation of peanut shells, preparation method is simple, high adsorption performance, easy regeneration and can be reused, expanded the adsorbent material source, for the comprehensive utilization of peanut shell provides an effective way.