Natural organism coagulant aid and preparing method theroef
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A coagulant and biological technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., to achieve the effect of large alum, easy to obtain, and convenient to use
Inactive Publication Date: 2009-06-24
WATERGLFUT BIOTECH
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Problems solved by technology
Another object of the present invention is to solve the problem of excessive flocculant dosage and improve the safety of drinking water existing in the flocculation technology in the existing water treatment process
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preparation example Construction
[0014] The preparation method of natural biological coagulation aid of the present invention may further comprise the steps:
[0015] (1) Moist heat modification treatment: the vegetable starch is placed in the modification solution, and the heat modification is carried out at a temperature of 80-120° C. for 30-60 minutes, and carried out in a glass or stainless steel container;
[0016] (2) Cooling treatment: import the modified liquid into a glass or stainless steel container, and cool to normal temperature;
[0017] (3) Filtration treatment: use 200 mesh sieve silk to filter, take out foreign matter in the liquid;
[0018] (4) Sterilization and storage: add 5ppm chlorine dioxide, seal in a plastic container, and store in a cool place for later use.
[0019] Natural biological coagulation aid of the present invention is made according to the following steps:
[0020] ① Firstly, the amount of aluminum salt used alone for raw water flocculation is determined through the labo...
Embodiment 1
[0024] First prepare 0.1% modified liquid in a stainless steel container, then weigh 1% cornstarch by weight of the liquid, add it to the modified liquid, and perform damp heat modification at 80-120°C for 30-60 minutes; after cooling to room temperature , use a 200-mesh sieve to filter, add 5 ppm chlorine dioxide to the filtrate for sterilization, and finally, put the finished product in a plastic container, seal it up, and set aside.
Embodiment 2
[0029] First prepare 0.1% modified liquid in a stainless steel container, then weigh 1% sweet potato starch by weight of the liquid, add it to the modified liquid, and perform damp heat modification at 80-120°C for 30-60 minutes; after cooling to room temperature , use a 200-mesh sieve to filter, add 5 ppm chlorine dioxide to the filtrate for sterilization, and finally, put the finished product in a plastic container, seal it up, and set aside.
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Abstract
The invention provides a preparation method of a natural biological coagulation aid, the method comprising the following steps: damp heat modification treatment: placing plant starch in the modifier, and performing damp heat modification at a temperature of 80-120°C for 30-60 minutes , carried out in a glass or stainless steel container; cooling treatment: import the above-mentioned modified liquid into a glass or stainless steel container, and cool to room temperature; filtration treatment: filter with a 200-mesh sieve to remove impurities in the liquid; sterilize and seal : Add 5ppm chlorine dioxide, seal in a plastic container, and store in a cool place for later use. The beneficial effect is that in the method for preparing the natural biological coagulant aid, the obtained coagulant aid raw material is easy to obtain, and is a coagulant aid used in conjunction with an aluminum salt flocculant. The method has the advantages of less raw material usage and a wide pH range , Simple processing technology, safe and harmless. By adding this biological coagulant, the amount of aluminum salt used can be reduced by 50-70%, and the flocculation effect of using a large amount of aluminum salt flocculant alone can be reached or exceeded.
Description
technical field [0001] The invention relates to a coagulation aid and a preparation method thereof, in particular to a natural biological coagulation aid and a preparation method thereof. Background technique [0002] Among water treatment methods, flocculation is one of the important methods. The currently used flocculants and coagulants are mainly inorganic compounds and synthetic organic compounds. The large amount of inorganic flocculants is easy to cause secondary pollution, especially the large-scale application of aluminum salts, which has an increasingly prominent impact on the environment, especially for the treatment of drinking water. A large amount of aluminum salts will lead to an increase in the incidence of Alzheimer's disease. Due to the use of most artificially synthesized polymer organic compounds as flocculants or coagulants, monomers remaining in water are toxic and harmful to human health, such as polyacrylamide, which is commonly used at present. The ...
Claims
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Application Information
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