Plant straw treating organic sewage comprehensive utilization method

Abstract

The invention discloses a comprehensive utilizing method for vegetable straws in treating organic sewage. The method comprises a pretreatment procedure and a treatment procedure with a biological reactor containing biological fillings. The invention is characterized in that the biological fillings of the biological reactor are biologically processed powder of the vegetable straws; anaerobic biological bacteria liquid is added in the pretreatment procedure; the aerobic biological bacteria liquid is added in the treatment procedure with the biological reactor. In addition, after the biological reactor treatment procedure, a biological fermentation procedure is added on the discharged matter with the addition of ferment bacteria liquid to obtain biological compost. With the method, the production period of treating the sewage is generally shorter than 15 minutes; not only the treated water totally complies with the discharge standard and the discharged matter can be transformed into the quality biological compost, but also none of the three wastes is discharged during the whole process. The method is applicable to treating organic sewage or waste water from various pollution sources.

Description

Technical field: [0001] The invention belongs to the technical field of sewage or waste water treatment, and in particular relates to a comprehensive utilization method for biologically treating organic sewage or waste water. technical background: [0002] In the prior art, there are many methods for treating urban sewage or waste water, and currently the most effective method is the biofilm treatment method. Recently, CN1887739A discloses a "activated sludge-biofilm composite integrated sewage treatment method and device", the method: first introduce the sewage to be treated into the anoxic zone, and keep stirring so that the sewage to be treated and the activated sludge are fully Mixing; then the above-mentioned treated sewage is introduced into the aeration zone with fillers, and the sludge that is suspended and grown by microorganisms is combined with the biofilm that grows fixedly, and the sewage that enters the aeration zone is treated by continuous aeration or intermi...

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Problems solved by technology

Although this method has many advantages, it also has obvious deficiencies. First of all, because the mixture of activated sludge and sewage simply relies on the natural formation of nitrifying dominant flora, the biological culture of the dominant flora takes a long time, which results in the residence time of sewage in the anoxic zone. Secondly, because the fillers used in the aeration zone are all conventional materials, and relying on long-term aeration, it still relies on the naturally formed biofilm to absorb dirt, so there is also a slow adsorption speed, and the residence time of sewage in the aeration zone is too long. Long problem; again, the sludge directly discharged by this method is still a kind of polluted waste

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