[Digestion] Paul's human waste

[Claudia wendland]

Dear Somphop,

indeed these are very good frame conditions for AD of toilet waste and 
kitchen refuse in your country. In my country we have to heat up biogas 
plants as it is too cold in winter.
There are biogas plants running in India, Indonesia and China where the 
biogas is used for cooking. Electricity can be generated by biogas with 
an engine in a high tech concept.
Attached I send you some photos from India, Dr Jha, Sulabh International 
Academy of Environmental Sanitation, Mahavir Enclave, New Delhi

Another hint is the website of BORDA, please see http://www.borda-net.org/

Best regards from Hamburg
Claudia

somphop vanichprapa schrieb:

> Dear Claudia,
>    Please send me more info. on the issue as I live in tropical 
> climate country ( Thailand ), perhaps, the waste from toilet in the 
> large volume like prison or hotel including their kitchen will be a 
> good source for biogas and might have better yield. I might generate 
> Electricity to grid if it's worthy.
> ----- Original Message ----- From: "Claudia wendland" 
> <c.wendland at tuhh.de>
> To: <>
> Sent: Tuesday, August 22, 2006 2:42 PM
> Subject: Re: [Digestion] Paul's human waste
>
>
>> Dear Paul,
>>
>> I am doing research on AD of human waste (toilet wastewater so called
>> blackwater). Here is a summary of my paper for the IWA conference small
>> systems in Mexico March 2006:
>>
>> Anaerobic digestion of blackwater from vacuum toilets and kitchen refuse
>> in a continuous stirred tank reactor (CSTR)
>>
>> C. Wendland, S. Deegener, J. Behrendt, P. Toshev and R. Otterpohl
>> Institute of Wastewater Management, Hamburg University of Technology,
>> Germany (TUHH)
>>
>> Abstract
>> The objective of this research was mesophilic anaerobic digestion of
>> blackwater from vacuum toilets (BW) and kitchen refuse (KR) in a CSTR in
>> an ecological sanitation system. A detailed investigation of the BW
>> characteristics was carried out. The research on anaerobic digestion was
>> performed with three CSTR of each 10 l volume at HRT of 10, 15 and 20
>> days. The digestion of BW at 20 days HRT showed stable performance,
>> without inhibition effects due to relatively high ammonium
>> concentrations. The removal of total and particulate COD was 61% and
>> 53%, respectively, and the methane yield 10 lCH4/cap/day. The addition
>> of kitchen refuse (KR) improved the performance of the CSTR in terms of
>> COD removal efficiency and methane yield. At 20 days HRT the removal of
>> total and particulate COD increased up to 71% and 67%, respectively, and
>> the methane yield to 27 lCH4/cap/day. The results at 15 days HRT showed
>> similar performance. At HRT of 10 days, the anaerobic treatment was
>> limited but reached steady state conditions at higher VFA concentrations
>> in the effluent, with a decrease of COD removal of 30-33% and of methane
>> yield of 19-21%. Assumed that 65% of the COD load from BW is collected
>> in the housing estate, the expected methane yields for 100% BW
>> collection are accordingly higher.
>>
>> Keywords
>> anaerobic digestion; kitchen refuse; blackwater; ecological sanitation;
>> vacuum toilets; CSTR
>>
>> If you are interested in more info please let me know
>>
>> Best regards from Hamburg
>> Claudia
>>
>> -- 
>> ***********************************************************
>> Claudia Wendland
>> Institute of Wastewater Management and Water Protection
>> Hamburg University of Technology
>> Eißendorfer Straße 42
>> 21073 Hamburg
>> Tel:+49 40 42878 3441
>> Fax:+49 40 42878 2684
>> c.wendland at tuhh.de
>> www.tu-harburg.de/aww
>> ***********************************************************
>>
>>
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>> Digestion mailing list
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>>
>


-- 
***********************************************************
Claudia Wendland
Institute of Wastewater Management and Water Protection
Hamburg University of Technology
Eißendorfer Straße 42
21073 Hamburg
Tel:+49 40 42878 3441
Fax:+49 40 42878 2684
c.wendland at tuhh.de
www.tu-harburg.de/aww
***********************************************************