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Sludge digestion method based on microorganism compound enzyme

A composite enzyme and microorganism technology, applied in biological sludge treatment, sludge treatment, chemical instruments and methods, etc., can solve the problems of waste of sludge useful energy and environmental pollution, and achieve the effect of improving dewatering performance and low cost

Inactive Publication Date: 2014-12-24
JIASHAN LANTIAN BISHUIBAO CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Arbitrary stacking and discharge of a large amount of untreated sludge will not only cause new pollution to the environment, but also waste useful energy in the sludge

Method used

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  • Sludge digestion method based on microorganism compound enzyme

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] figure 1 It is a schematic diagram of the sludge digestion process based on the microbial compound enzyme of the present invention.

[0017] See figure 1 , the sludge digestion method based on microbial composite enzyme provided by the invention comprises the following steps:

[0018] Step S1: First, settle and concentrate the sludge in the sewage by gravity; gravity concentration is a separation method in which sludge settles naturally under the action of a gravity field. It is a physical process that does not require external energy, and is the most energy-saving sewage mud thickening method. Gravity concentration settlement can be divided into four forms: free settlement, interference settlement, regional settlement and compression settlement.

[0019] Step S2: then adding a culture agent and a microbial composite enzymatic catalyst to the...

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Abstract

The invention discloses a sludge digestion method based on microorganism compound enzyme. The method includes the steps of a), settling and concentrating sludge in waste water by the aid of gravity; b), adding cultivation agent and microorganism compound enzymatic catalyst to the waste water for aerobic treatment of the sludge; c), adding cultivation agent and microorganism compound enzymatic catalyst to the sludge for anaerobic digestion; d), adding microorganism flocculant for conditioning and dewatering of the sludge. By the digestion method, aerobic treatment and anaerobic digestion of the sludge are performed through the cultivation agents and the microorganism compound enzymatic catalysts, the sludge can be digested effectively, and dewatering performance of the sludge is improved by the microorganism flocculant. In addition, the method is low in cost and easy to implement and popularize.

Description

technical field [0001] The invention relates to a sludge digestion method, in particular to a sludge digestion method based on microbial compound enzymes. Background technique [0002] With the development of world industrial production and the increase of urban population, the discharge of urban industrial wastewater and domestic sewage is increasing. According to statistics, my country's annual sewage discharge has reached 5.11X10 million tons. Sewage sludge is a solid waste produced in the process of sewage treatment. Its output is huge, accounting for about 0.3% to 0.5% of the treated water (calculated with a water content of 97%). If advanced treatment is carried out, the amount of sludge may increase 0.5—1.0 times. The United States accumulates more than 10 million tons of dry sludge every year, Japan has 2.4 million tons, and my country has nearly 500,000 tons. The composition of sewage sludge is very complex. It is an aggregate composed of bacterial micelles formed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/02
CPCY02W10/20
Inventor 杨彩珍孙金山王卫东
Owner JIASHAN LANTIAN BISHUIBAO CHEM