Biological pollution is currently in the operation of the reverse osmosis, more difficult to solve the problem.
At the same time is also the most prone to problem.

The reverse osmosis water microorganisms including bacteria, algae, fungi and spore, spores and viruses.

Microbial contamination mucosa from biomass molecules adsorbed on the surface of the reverse osmosis, is by microorganisms, living or dead organic matter.

Sandwiched between reverse osmosis polymer, and secrete of polysaccharide derivatives.

So the formation of microbial contamination, it depends on the microbial itself, the surrounding environment and adherent surface changes of various factors.


for biological pollution, use the way of chlorinated disinfection to control, because its contain amide group for polyamide composite membrane be oxidized easily, so must be conducted before but into the reverse osmosis membrane dechlorination treatment.

According to different systems, and the contaminated situation also requires a separate online or when cleaning the heat sterilization treatment.


1, the action of reverse osmosis scale inhibitor:
reverse osmosis membrane scale inhibitor is a highly effective liquid scale inhibitor, is used to control the membrane separation system in the control of calcium carbonate, sulfate and ferric oxide precipitation caused by the scale.

After using the reverse osmosis membrane scale inhibitor can prolong wash cycle system, make the membrane longevity and reduce the cost.

MDC220 reverse osmosis membrane scale inhibitor has been widely used in reverse osmosis and nanofiltration device.


effective control of calcium carbonate, calcium sulfate, strontium sulfate scale, up to + 3.

0 lsi without fouling
all main reverse osmosis membrane can use the
by dispersed particles blocking to maintain clean and reverse osmosis membrane surface
the PH of the water from 5 -

9 is still valid within the scope of the
can be added directly or diluted use
liquid product, easy to use
Hypersperse reverse osmosis membrane scale inhibitor MDC220 can be used to control the membrane separation system scale precipitation particles and reduce congestion.

The efficient scale inhibitor performance/dispersant formula is especially with SoliSep MPT150 reverse osmosis flocculant is compatible with scale inhibitor, otherwise it will cause the reverse osmosis membrane blocking.


2, reverse osmosis membrane scale inhibitor index
index name index
reverse osmosis membrane scale inhibitor appearance clear amber liquid
PH 3.
0±0.
5
density (
20 ℃ ）
g/cm3 1.
1±0.
05
- the freezing point

15 ℃
- minimum storage temperature
Viscosity of 12 ℃
1.
79cp(
25 ℃ )

Reverse osmosis fungicide

1, the characteristics of reverse osmosis fungicide
reverse osmosis fungicide MBC881 is special fungicide, reverse osmosis water system of microbial cells with a strong penetration, decomposition of microbial cell tissue damage, the reverse osmosis device in bacteria, fungi, algae and other microorganisms have extremely strong kill and inhibition.

(
1)

Non oxidizing bactericide, effective sterilization effect quickly;

(
2)

For the formation of bacteria loam has certain stripping effect;

(
3)
Compatible with all membrane can;

(
4)

Applicable pH range, good biodegradability, does not pollute the environment.


company production of reverse osmosis fungicide belonging to the bacteriostatic agent, the oxidation it has a broad spectrum,

Edema can inhibit bacteria, fungi, algae, including the microbial) under the mucous membrane
And efficient,

Is 6 PPM dosing concentration that could very well inhibit the growth of bacteria and algae)

, low toxicity and safety to the environment, etc, is the ideal sterilization principle is: because its molecules contain nitrogen -
—

Sulphur keys, by disconnect protein of bacteria and algae and sterilization effect, reverse osmosis fungicide after contact with microorganisms can quickly inhibit its growth, the dampening process is irreversible, resulting in the death of microbial cells.

The reverse osmosis fungicide also penetrate adhesion on the surface of the equipment, pipeline, water tank, mucous membrane, inhibit and kill the submucosal microorganisms.

In accordance with international and reverse osmosis membrane using standard issued by the ministry of construction in China.
Suitable for reverse osmosis membrane, nanofiltration and ultrafiltration membranes.


2, reverse osmosis fungicide index
index name index
reverse osmosis that appearance yellow-green liquid density (

20 ℃ ）
g/cm3 1.
00±0.
05
PH 3.
5
- the freezing point
8 the cp (2 ℃
viscosity
25 ℃ ）


for inorganic ions can cause fouling, through ion exchange, and hard, such as acid alkali to prevent, in most cases, you need to add different scale inhibitors to prevent inorganic salts fouling;

.

Large flow water filter membrane filter is one of the keys to its use, so for the performance and characteristics of membrane filter we need to understand in detail.

So, how to test the flow of water filter membrane performance?

Main testing process and method is as follows:


for large flow water filter can be used to test water soaking and hydrophobic membrane water resistance is strong, the smaller aperture, the water in which the required pressure is, the greater the result under certain pressure can judge the big flow of chilled water through the membrane filter in the water filter aperture size.







the big flow filter and filter membrane soaking in solution, through the control system in a side pressure treatment, adjust air intake, with the increase of the pressure of gas will be released from the side of the membrane, membrane surface will form the size of bubbles, instrument to corresponding to the pressure of bubble point value judgment.




when the gas pressure in the flow of water filter bubble point values of 80%, a large amount of gas hole filter don't happen, but have a small amount of gas dissolved, then from the liquid to spread to the other side, is called diffusion current.




due to the bubble point values for a qualitative value, but the bubble volume could not be determined accurately, and the diffusion flow value is a quantitative value, to be able to accurately determine the integrity of the filter, can also reflect the membrane, flow rate and the gap area, thus more effective.

fold decline pore membrane filter


fold decline pore membrane filter structure is introduced:

the filter element is double polypropylene discount structure, the inner layer of polypropylene film as the final filter layer, the outer layer USES the aperture's biggest non-woven fabric for the coarse filter layer, has played a role in the process of the filter.


element of internal and external support for polypropylene material.

So the filter is pre filter and filter together.

the accuracy of filtering.
um,.
um,.
um,.
um,.

Um, um, um, um, eight kinds of pore size, choose according to customer's request.





fold decline pore membrane filtration core strengths:

discount structure of the cartridge filter has big filter area, low starting pressure difference, fast speed, the filter volume small, the cost is small.


due to pre filtering, and eventually filter is a unity, so the filter capacitors carrying capacity is bigger.


service life is longer than a single aperture of filter.

Single pure polypropylene material, easy to determine the chemical compatibility.





fold decline pore membrane filter technology parameters:


PH.
。

Pharmaceutical, beverage, food, the terminal filtration of highly purified water.

filtration precision: absolutely.
。
。
。
。
。

Um:
use temperature ℃


guangzhou filter source water filter co. , LTD.


our company solemnly promise, guarantees the product quality completely.

We should according to the requirements of the different water quality and water quality in combination with economic factors determine the appropriate treatment process.

The slightly polluted water are discussed in depth treatment technology, a: ozone -
—
Biological activated carbon technology.
Ozone
-
—

Biological activated carbon technology because of the strong oxidizing, less by-products, adsorption and degradation effect is remarkable characteristics is becoming more and more attention and spread quickly.

At present this technology has been more and more countries actual applied in polluted water purification, urban sewage regeneration reuse as life mixed with water, etc.
Ozone
-
—

Biological activated carbon technology ozone
-
—

Biological activated carbon process is carbon physical and chemical adsorption, chemical oxidation and ozone oxidation degradation and ozone disinfection four kinds of technologies for the integration of technology.


the process generally located in the sand filter.

First using ozone oxidation, initial oxidation decompose the organic matter in the water and other reducing agents, reduce the organic load of biological activated carbon filter, ozone oxidation at the same time can make the water is hard to biodegradable organic chain scission, open loop, is converted into simple fat hydrocarbon, change its biological properties.

The characteristics of ozone itself determines the ozonation technology has the following characteristics: (1) due to its strong ability of oxidation of ozone, can remove other water treatment technology is difficult to remove the substance;

(2) the ozonation reaction faster, thus can reduce the volume of reaction equipment or structures;

(3) the residual ozone is converted into oxygen quickly, does not produce secondary pollution, and can increase the dissolved oxygen in water;

(4) in the sterilization and kill the virus at the same time, in addition to smell, in addition to taste;

5. Ozonation helps flocculation, can improve the effect of precipitation.


active carbon can very quickly adsorbed water soluble organic matter, as well as the enrichment of microorganism, make its surface to grow a good biological membrane, by itself of oxygen filling effect, microbes can to organic matter in coal bed for nutrients to grow a lot of aerobic bacteria, the activated carbon adsorption of small molecule organic matter fully biodegradable.
Ozone
-
—

Biological activated carbon process is mainly in view of the slightly polluted water, ammonia nitrogen, organic matter, chromaticity and turbidity, smell, can effectively remove the organic matter and ammonia nitrogen in the water, the lower the concentration of organic matter to 700 mu mu g/L g/L ~ 1600.

Ammonia nitrogen concentration is lower than the detection limit of the inorganic reducing substances in the water, chromaticity and turbidity, smell also has very good removal effect, and can effectively reduce the mutagenic activity of water, ensure the safety of the reclaimed water.
Ozone
-
—

Biological activated carbon process is developed on the basis of the activated carbon adsorption, a combination of ozone, activated carbon, the advantages of both.

Ozone has strong oxidation ability, REDOX potential in the water after fluoride and second.


separately using ozone, high cost, and the water of biodegradable organic carbon assimilation (
AOC)
Rise, causing the biological stability of water variation;

Using activated carbon alone, its adsorption and microbial degradation synergy effect is abate, saturated adsorption cycle shortened, to maintain water quality goal, must often regeneration.
Ozone -
—

Activated carbon combined technology can effectively overcome the limitations of both used alone, and give full play to the advantage of the two, has greatly improved water quality treatment effect.
In addition, using ozone -
—

Activated carbon combined technology can effectively reduce the AOC (
Biological organic carbon assimilation)

Value, has greatly improve the biological stability of water, activated carbon on the adhesion of microbes to remain active for a long time, the effective extension of the activated carbon regeneration cycle.
Ozone
-
—

The combination of activated carbon, makes the water dissolved and colloidal organic matter into more easily biodegradable organic matter, will be some high humus oxidation of low molecular weight, molecular weight easily biodegradable material and become carbon bed microbial source of nutrients.

In coal bed, organic adsorption on the surface of granular and small pore, microbial growth on the surface of the carbon granule, big hole, some organic matter degradation, by the effect of enzyme in the dual role of adsorption and biodegradation in addition to the organic matter in water.