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Domestic sewage process method

A treatment method and technology for domestic sewage, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of undisclosed microbial methods, etc., and achieve the effect of optimal use effect

Inactive Publication Date: 2008-10-08
阮承迈 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patents disclose multiple sewage treatment methods, including methods involving microbial treatment, such as Chinese patent 02114538.5, which mainly involves the improvement of fillers for microbial film carriers, and domestic water treatment steps involved in Chinese patent 00131162.X, mainly It also involves the improvement of equipment for sewage treatment; so far, there is no method for the specific use of microorganisms disclosed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of mixed strains: preparation of Rhodopseudomonas spheroids ATCC11167 strain.

[0032] Medium components: NH 4 Cl 1.0g, yeast extract 0.1g, KH 2 PO 4 0.5g, NaCl 2.0g, water 900ml, with 10% NaHCO 3 Adjust the pH value to 6.5-7.5, and then add water to 1000ml.

[0033] Culture conditions: pH=6.8; temperature is 28-30° C., stirring rate is 100 rpm, and time is 56 hours.

[0034] Preparation of Rhodopseudomonas palustris ATCC BAA-98 strain.

[0035] Medium components: NH 4 Cl 1.0g, yeast extract 0.1g, KH 2 PO 4 0.5g, NaCl 2.0g, water 900ml, with 10% NaHCO 3 Adjust the pH value to 6.5-7.5, and then add water to 1000ml.

[0036] Culture conditions: pH=6.8; temperature is 28-30° C., stirring rate is 100 rpm, and time is 56 hours.

[0037] Preparation of Bacillus subtilis ATCC 21332 Strain

[0038] Medium components: soybean protein powder 1.0g, yeast extract 0.5g, dipotassium hydrogen phosphate 0.05g, magnesium sulfate 0.05g, calcium chloride 0.05g, wi...

Embodiment 2

[0042] Rhodopseudomonas sphaericus in Example 1 was changed to Rhodopseudomonas sphaericus ATCC14690, and Rhodopseudomonas paluscans was changed to Rhodopseudomonas palustris ATCC11168.

[0043] The ratio of the three strains was changed to a ratio of 25:25:2. Adopt spray drying to make solid preparation, all the other are the same as embodiment 1.

Embodiment 3

[0045] Change the strain ratio of Rhodopseudomonas sphaericus in Example 1: Rhodopseudomonas palustris: Bacillus subtilis to 50: 1: 50, and use a spray-dried solid preparation, and the rest are the same as in Example 1.

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PUM

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Abstract

The invention relates to a domestic sewage treatment method, in particular to a domestic sewage treatment method utilizing microorganisms, which chooses spheroid rhodopseudomonas, rhodopseudomonas palustris and Bacillus subtilis or mutants thereof as metabolism bacteria; and the metabolism bacteria are cultured in a fermenter or a culturing pond and then are put into the sewage by mixing with nutrient additives at the same time, thereby realizing the sewage purification. The bioremediation method provided by the invention can rapidly degrade polluted organic nitrogen, carbohydrates, aromatic ring compounds, domestic pollutants, animal husbandry waste water, hydrocarbons, grease, etc. in the water body.

Description

technical field [0001] The invention relates to a domestic sewage treatment method, in particular to a domestic sewage treatment method using microorganisms. Background technique [0002] The purification treatment of urban domestic sewage is getting more and more attention in large cities, because its discharge must meet the standard. The cost and safety in the process of processing are the first considerations. The main feature of domestic sewage is that it contains a large amount of carbohydrates and ammonia nitrogen, which has a great impact on water quality. Ammonia increases the oxygen demand of water and is toxic to aquatic fish. If ingested, it can impair human blood transport. The ability of oxygen, so the removal of ammonia nitrogen in water is very critical. In addition, solid matter (such as feces) in domestic sewage and agricultural water pollutants polluted by chemical fertilizers and pesticides must also be properly degraded. Safe and effective degradation t...

Claims

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Application Information

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IPC IPC(8): C02F3/34C12N1/20
Inventor 阮承迈梁丽霞赵彤
Owner 阮承迈
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