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Purification method of high-phosphorus-content wastewater

A waste water and content technology, applied in chemical instruments and methods, water/sewage treatment, biological water/sewage treatment, etc., to achieve the effect of strong practicability, cheap raw materials, and strong operability

Inactive Publication Date: 2016-10-26
吴小慧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to various problems such as processing technology, raw materials, equipment, and cost, the above-mentioned centralized technologies have many defects and disadvantages.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Add sodium hypochlorite to the wastewater to be treated for sterilization, then add NaOH with a concentration of 12%, adjust the pH to 9, and then add flocculant, the wastewater after flocculation enters the multimedia filter for treatment, and the composition of the flocculant is : 9 parts of polyaluminum chloride, 7 parts of aluminum sulfate, 8 parts of polyphosphorus ferric chloride, 5 parts of calcium hydroxide, 4 parts of chitosan, 5 parts of styrene sulfonate, 2 parts of alum, 3 parts of agar;

[0022] (2) Put the filtered waste water into the aeration tank, and add a composite microbial agent in the aeration tank; the total weight of the composite microbial agent is 0.01% of the wastewater weight, and the treatment time is 10 hours;

[0023] (3) Use soluble metal iron as the plate, and use high-voltage pulse electrocoagulation to treat the wastewater treated with the compound microbial agent for 40 minutes to remove heavy metal ions, grease and colloids in the...

Embodiment 2

[0029] (1) Add sodium hypochlorite to the wastewater to be treated for sterilization, then add NaOH with a concentration of 12%, adjust the pH to 9.2, and then add a flocculant, and the flocculated wastewater enters a multimedia filter for treatment, wherein the composition of the flocculant is : 9 parts of polyaluminum chloride, 7 parts of aluminum sulfate, 8 parts of polyphosphorus ferric chloride, 5 parts of calcium hydroxide, 4 parts of chitosan, 5 parts of styrene sulfonate, 2 parts of alum, 3 parts of agar;

[0030] (2) Put the filtered waste water into the aeration tank, and add a composite microbial agent in the aeration tank; the total weight of the composite microbial agent is 0.015% of the wastewater weight, and the treatment time is 12 hours;

[0031] (3) Use soluble metal iron as the plate, and use high-voltage pulse electrocoagulation to treat the wastewater treated with the compound microbial agent for 40 minutes to remove heavy metal ions, grease and colloids in...

Embodiment 3

[0037] (1) Add sodium hypochlorite to the wastewater to be treated for sterilization, then add NaOH with a concentration of 12%, adjust the pH to 9.4, and then add a flocculant, and the flocculated wastewater enters a multimedia filter for treatment, wherein the composition of the flocculant is : 9 parts of polyaluminum chloride, 7 parts of aluminum sulfate, 8 parts of polyphosphorus ferric chloride, 5 parts of calcium hydroxide, 4 parts of chitosan, 5 parts of styrene sulfonate, 2 parts of alum, 3 parts of agar;

[0038] (2) Put the filtered waste water into the aeration tank, and add a composite microbial agent in the aeration tank; the total weight of the composite microbial agent is 0.02% of the wastewater weight, and the treatment time is 14 hours;

[0039](3) Use soluble metal iron as the plate, and use high-voltage pulse electrocoagulation to treat the wastewater treated with the compound microbial agent for 40 minutes to remove heavy metal ions, grease and colloids in t...

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Abstract

The invention discloses a purification method of high-phosphorus-content wastewater. The purification method mainly comprises the following steps: stirring a flocculating agent with a special formula and the wastewater to react; treating by a multi-medium filter, carrying out metabolic treatment of a compound microorganism bacterium agent in an aeration tank and high-voltage pulse electrocoagulation treatment, and eluting and filtering with ion change resin; then stirring with a specially-made compound wastewater treatment agent, standing and filtering; finally, carrying out reverse osmosis concentration treatment by a high-pressure pump to obtain treated water meeting emission standards. The treated water obtained by a wastewater treatment method of the optimized process above has high wastewater treatment efficiency; the phosphorus removing efficiency is high, and the removed treated water can reach national standards; meanwhile, the process is simple and feasible and strong in operability, has no pollution to environments, can meet industrial requirements, and has a relatively good application prospect.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a method for purifying wastewater with high phosphorus content. Background technique [0002] With the rapid development of my country's modern industrialization, the development and utilization of phosphate rock resources play a particularly important role in economic development. my country is a large phosphorus producing country in the world, rich in phosphate rock resources, but the development and utilization of phosphate rock resources is characterized by less rich ore, more middle-grade ore, difficult mining, more difficult ore, and less easy beneficiation; foreign phosphate rock resources are also limited, mining High difficulty. At the same time, too much phosphorus enters the water body, and its main mode of existence can be divided into true solution phosphorus, colloidal phosphorus and granular phosphorus according to its particle size, which may cause se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/52C02F1/56C02F3/34
CPCC02F9/00C02F1/00C02F1/42C02F1/444C02F1/463C02F1/50C02F1/5245C02F1/56C02F1/66C02F3/341
Inventor 吴小慧
Owner 吴小慧